c-cd cccc ccdc ccdh ccdr cchr ccoc ccod ccrc ccrt cctc cctt cd-r cddr cdot chch choc chod choh choo chor chrc chrd chro chrr chrt chto chtr chtt coch coco coct codd coho cood cooh coot cor- corc cord coro corr cort cotc coth coto cott crcc crcr crdc croc crod croh croo cror crot crrt crtc ctor ctot ctrc dccc dcct dctc dddd ddoc ddot ddrc dhod dhor doch doco doct dod- dodd dodo dohc dohr dood door doot dorc dord doro dorr dort dotd doth doto dott drod droh drot dtcc dthd dtor dtot hccc hcch hcdr hcrd hdoc hdod hdtt hhhh hoch hocr hodh hodr hoho hood hoor hoot horc hord horo horr hort hotd hoth hoto hotr hott hrdc hrod hrrc htcc htoh httr occc occt ocht ocro ocrr oct- octo oddd odoh odoo odor odot ohcc ohho ohoh ohto oocr ooho oooh oooo oord oort orch orco ordo oro- oror orot orro ortc orth orto otcd otho othr oto- otoh otoo otor otro otto rccc rcdc rcrd rctc rdoc rhoc rhod rhoh rocc roch roco rodd rodo rohr rood roor root rorc roro rort rotc roth roto rotr rott rrrr rtcc rtdt tccc tcdd tch- tchh tcho tchr tctc tdor thch thdr thoo thor thot thro thtr toch toco todd todo todt toho tood tooh toor toot torc tord toro torr tort totc totd toth toto totr tott trcc troc trod troo trot trtc trtr tttt